/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.constant;

import proguard.classfile.*;
import proguard.classfile.constant.visitor.ConstantVisitor;

/**
 * This Constant represents a name and type constant in the constant pool.
 *
 * @author Eric Lafortune
 */
public class NameAndTypeConstant extends Constant {
    public int u2nameIndex;
    public int u2descriptorIndex;

    /**
     * Creates an uninitialized NameAndTypeConstant.
     */
    public NameAndTypeConstant() {}

    /**
     * Creates a new NameAndTypeConstant with the given name and type indices.
     * 
     * @param u2nameIndex the index of the name in the constant pool.
     * @param u2descriptorIndex the index of the descriptor in the constant pool.
     */
    public NameAndTypeConstant(int u2nameIndex, int u2descriptorIndex) {
        this.u2nameIndex = u2nameIndex;
        this.u2descriptorIndex = u2descriptorIndex;
    }

    /**
     * Returns the name index.
     */
    protected int getNameIndex() {
        return u2nameIndex;
    }

    /**
     * Sets the name index.
     */
    protected void setNameIndex(int index) {
        u2nameIndex = index;
    }

    /**
     * Returns the descriptor index.
     */
    protected int getDescriptorIndex() {
        return u2descriptorIndex;
    }

    /**
     * Sets the descriptor index.
     */
    protected void setDescriptorIndex(int index) {
        u2descriptorIndex = index;
    }

    /**
     * Returns the name.
     */
    public String getName(Clazz clazz) {
        return clazz.getString(u2nameIndex);
    }

    /**
     * Returns the type.
     */
    public String getType(Clazz clazz) {
        return clazz.getString(u2descriptorIndex);
    }

    // Implementations for Constant.

    public int getTag() {
        return ClassConstants.CONSTANT_NameAndType;
    }

    public void accept(Clazz clazz, ConstantVisitor constantVisitor) {
        constantVisitor.visitNameAndTypeConstant(clazz, this);
    }
}
